LAKE ANDES-A Lake Andes man was arrested Saturday night and charged with assaulting a woman and driving drunk.

On Friday, 18-year-old Trinity Thin Elk reportedly hit the woman with an open hand at least 15 times, stuck her head underwater in a bathtub, cut off her airway with his hands and beat her head against the side of the bathtub.

When another woman came into the bathroom where the alleged assault was taking place, Thin Elk reportedly left the scene and drove away.

An officer was dispatched to North Fifth Avenue in Lake Andes following the assault and reportedly located the woman and led her to the hospital, at which point she told the officer about the incident.

On Saturday, according to court documents, Thin Elk was found to have driven his vehicle into a ditch near mile marker 338 on U.S. Highway 18. A Charles Mix County Sheriff's Deputy reportedly attempted to stop Thin Elk, who fled on foot. He was apprehended with assistance from Yankton Sioux tribal units and a South Dakota Highway Patrol trooper.

Thin Elk allegedly admitted to drinking a pint of whiskey and 64 ounces of beer. He was transported to the Charles Mix County Jail and gave a preliminary breath test of 0.11 at 11:11 p.m.

Thin Elk is charged with one count of aggravated assault causing serious bodily injury, a Class 3 felony, and one count of a first-offense DUI, a Class 1 misdemeanor.